Urban Terror is going to stay as a q3 mod, but you'll be able to run it with an ioq3 executable (so you don't really need q3, just download the mod and the exe). That way they dont have to go open source, and still have PB support.

Q3 IS LIKE $9.99 US IN MOST STORES EVEN CHEAPER IF YOU CAN FIND IT AT A FLEA MARKET OR TAG SALE... CHEAPER THAN A MOVIE OR EVEN LUNCH...

Dude, you might as well do a little digging and get it for FREE. There were more copies of Quake 3 downloaded off the net than there were sold, so your bound to be able to grab a copy somewhere (I got a copy off Limewire, but sadly it was missing some files and couldn't load any levels. But on the upside, I can still use it to play Q3TC).

_________________"Who's chair is that?... who put that G**Damn chair here? It's not my chair. Not my chair not my problem, that's what I say"

Quake3 is basically free through GPL but it does not contain game contents like the sourcecode (opensource but not GPl), graphics, sounds, and maps. You can use the GPL version to make your own games from scratch or port over a mod.

There are already a handful of stand-alone Q3 engine games out there.
One of the more noteable ones is Tremulous, a class-based team shooter with some very unique features.
I played this online a little bit, and yeah it's real fun, but my time got occupied with other things....

_________________"Who's chair is that?... who put that G**Damn chair here? It's not my chair. Not my chair not my problem, that's what I say"